Fivetran incident
Fivetran: OAuth Authentication Issues Affecting Multiple Connections
Fivetran experienced a minor incident on March 26, 2026 affecting General Services, lasting 1h 7m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Mar 26, 2026, 04:05 PM UTC
The issue has been identified and we are working to resolve it.
- monitoring Mar 26, 2026, 05:00 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Mar 26, 2026, 05:12 PM UTC
This incident has been resolved. We have observed that error rates have returned to normal levels, and the service is operating as expected. Incident Summary Description: We identified an issue with the OAuth Authentication that is affecting multiple connections, resulting in a 404 error. Timeline: The issue began on 26/03/2026 at 09:09 UTC and was resolved on 26/03/2026 at 16:42 UTC. Cause: During an ingress upgrade, an error caused OAuth callback requests to return HTTP 404 responses. This led to authentication failures for connections relying on OAuth. Resolution: The change was reverted, which restored normal OAuth functionality for Fivetran connections.